- PII
- 10.31857/S0033849424070099-1
- DOI
- 10.31857/S0033849424070099
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 69 / Issue number 7
- Pages
- 669-677
- Abstract
- The problems arising in experiments using liquid flows are considered. The advantages of using nuclear magnetic resonance-based devices for flow parameter control both in research and in industrial parameter measurements are noted. A new method for forming a nutation line contour with a given profile from a liquid flow with magnetization inversion has been developed, and the features of controlling the processes of this contour formation have been established. Experimental studies have been conducted and the possibility of applying the new method for measuring the liquid flow rate q with rapid changes in the flow velocity has been proven. New coefficients in the Bloch equations are proposed that describe the motion of three magnetization components (Mx’, My’ and Mz’) in the nutation coil in a liquid flow in a strong inhomogeneous field. The nutation line contour has been calculated for various parameters B0 and q. The minimum value of the magnetic field inhomogeneity has been established taking into account q and the parameters of the current medium, which must be ensured in the nutation coil location sector when forming the line contour at the noise level to implement the “magnetic” mark mode when measuring q. A comparison of theoretical calculations with experimental data was carried out.
- Keywords
- ядерный магнитный резонанс намагниченность текущая жидкость контур линия нутации скорость потока погрешность измерения
- Date of publication
- 16.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 16
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